This is the OG (pre-Sept 09) illadelph 3ft 3 ft three foot tube. It has a 12" base and has an 18" and 6" extension to be able to adjust its size. The join is also the same size as the coils so it can actually accommodate a triple coil (check my instagram @atarivideo_420 for a pic and clip of that). Thanks a lot for watching! Subscribe to my channel here and follow me on instagram!